Quote: I don`t think the examples "A,B,C" were meant as different shops versions of stage II porting,but as a reference as to the differece between stage 1,2 and 3 porting.
these are results from heads from 3 different shops.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
